In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

Q: [header] How to calculate a light year [title] Define the light year. [step] A light year is a measure of distance equal to how far light travels in one earth year. Because distances across the universe are so large, astronomers use light years. <sep> (A) However, they can also be determined by dividing by a distance. [substeps] Some light years are used year-round. (B) For light year 2014, the main determiner is the sun. In the light year, the world is filled with light bulbs. (C) Without light years, discussing the distance between two stars would require the use of large, unruly numbers. [substeps] Another measure of distance you may come across when learning astronomy is the parsec. (D) [substeps] There are two kinds of light years: day and night. The two types of light years are known as night and day.

A: C
****
Q: The people start the race behind a closed and grated fence, which then opens and allows them to start racing from an elevated platform down onto the paved raceway. the racers <sep> (A) pedal with one person in a white jacket in the lead. (B) pass snow covered stands along a hilly road up above the as they ride up the hill past the tight stands and sandy roads of the garage. (C) sit against the wall on the track as they wait for the race to start. (D) pass through gaps while the passengers attempts to stay ahead.

A: A
****
Q: [header] How to grill a perfect steak [title] Choose the right type of grill for your meal. [step] A great steak speaks for itself--it needs little seasoning other than some salt and pepper and is packed with flavor. The right grill will help accentuate this flavor. <sep> (A) That said, any grilled steak will be perfect if handled correctly, so there is no " wrong " choice. [substeps] Propane: gas grills add little flavor to the meat, letting the steak stand on its own. (B) The following vegetables should be avoided in your recipe : [substeps] Figs: you can use them for a traditional steak, but these typically require baking. Do not purchase this kind of grill-they will go bad within one month. (C) A conventional grill should be cast into deep charcoal (which is just a little bit hotter than it would be in a gas grill). Since the steak is about 1/2 to 1/2 inch (12 to 15) thick, a smaller grill will be necessary. (D) There are plenty of great steaks to choose from and the best ones can double as a addition to your meal. [substeps] Look on the front end of the grill, not along the sides.

A:
A
****
